Saturday, December 21, 2019

K3s on Raspberry Pi 4 4GB / Ubuntu 19.10 / Arm64

Picking this back up again, now that the USB bug with a >3GB of memory has been fixed in the latest version of Ubuntu 19.10.

Installing K3s is pretty easy, but there is one gotcha that isn't terribly well documented anywhere that I could find.

You need to enable cgroups for cpu and memory. To do that on Ubuntu 19.10 on a Raspberry Pi, edit /boot/firmware/nobtcmd.txt and add the following to the end of the existing line:

cgroup_enable=cpuset cgroup_enable=memory cgroup_memory=1

Reboot. Then install K3s

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